Could I be pregnant? Leading up to ovulation day

Me and my husband had unprotected sex on the 25th October and my ovulation day (according to this app) was the 29th, so I was in my fertile window.

I'll be honest and say we haven't been trying at all, this time was the ONLY time in 2 months!

I'm 32 and we've never had an accident before as I've either been on the pill or we'd use other protection. So I don't even know if I can or not- I know I have to wait for 2 weeks to do a test, is that right?

I'm happy either way but the more I've been thinking about it, the more hopeful and keen I am to maybe start a family. This is so hard!

Has anyone or anyone you know falling pregnant from one time? Or do I need to bring myself back down to earth and realise it's probably not that possible?

Thank you ☺️ 💖